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5CL8
17.4 STOP/SLOW Modes during AD Conversion
When standby mode (STOP or SLOW mode) is entered forcibly during AD conversion, the AD convert operation
is suspended and the AD converter is initialized (ADCCR1 and ADCCR2 are initialized to initial value). Also, the
conversion result is indeterminate. (Conversion results up to the previous operation are cleared, so be sure to read
the conversion results before entering standby mode (STOP or SLOW mode).) When restored from standby mode
(STOP or SLOW mode), AD conversion is not automatically restarted, so it is necessary to restart AD conversion.
Note that since the analog reference voltage is automatically disconnected, there is no possibility of current flowing
into the analog reference voltage.
Example :After selecting the conversion time 19.5
µ
s at 16 MHz and the analog input channel AIN3 pin, perform AD con-
version once. After checking EOCF, read the converted value, store the lower 2 bits in address 0009EH nd store
the upper 8 bits in address 0009FH in RAM. The operation mode is software start mode.
: (port setting)
:
;Set port register approrriately before setting AD
converter registers.
:
:
(Refer to section I/O port in details)
LD
(ADCCR1) , 00100011B
; Select AIN3
LD
(ADCCR2) , 11011000B
;Select conversion time(312/fc) and operation
mode
SET
(ADCCR1) . 7
; ADRS = 1(AD conversion start)
SLOOP :
TEST
(ADCDR2) . 5
; EOCF= 1 ?
JRS
T, SLOOP
LD
A , (ADCDR2)
; Read result data
LD
(9EH) , A
LD
A , (ADCDR1)
; Read result data
LD
(9FH), A
Содержание CEM2100/00
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Страница 17: ...PCB LAYOUT TUNER BOARD TOP SIDE VIEW 17 ...
Страница 18: ...PCB LAYOUT TUNER BOARD BOTTOM SIDE VIEW 18 ...
Страница 19: ...PCB LAYOUT SD BOARD TOP SIDE VIEW ...
Страница 20: ...20 PCB LAYOUT CD CONNECTOR TOP SIDE VIEW ...
Страница 21: ...PCB LAYOUT ISO BOARD BOTTOM SIDE VIEW 21 ...
Страница 22: ...22 SET EXPLODER VIEW DRAWING ...
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Страница 113: ...Revision History Date Revision 2008 7 31 1 First Release ...
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Страница 126: ...Page 4 1 3 Block Diagram T5CL8 1 3 Block Diagram Figure 1 2 Block Diagram ...
Страница 130: ...Page 8 1 4 Pin Names and Functions T5CL8 ...
Страница 155: ...Page 33 T5CL8 ...
Страница 156: ...Page 34 2 Operational Description 2 3 Reset Circuit T5CL8 ...
Страница 186: ...Page 64 5 I O Ports 5 8 Port P7 P77 to P70 T5CL8 ...
Страница 194: ...Page 72 6 Watchdog Timer WDT 6 3 Address Trap T5CL8 ...
Страница 214: ...Page 92 8 16 Bit TimerCounter 1 TC1 8 3 Function T5CL8 ...
Страница 270: ...Page 148 12 Asynchronous Serial interface UART1 12 9 Status Flag T5CL8 ...
Страница 280: ...Page 158 13 Asynchronous Serial interface UART2 13 9 Status Flag T5CL8 ...
Страница 332: ...Page 210 16 Serial Bus Interface I2C Bus Ver D SBI 16 6 Data Transfer of I2C Bus T5CL8 ...
Страница 342: ...Page 220 17 10 bit AD Converter ADC 17 6 Precautions about AD Converter T5CL8 ...
Страница 354: ...Page 232 19 Flash Memory 19 4 Access to the Flash Memory Area T5CL8 ...
Страница 388: ...Page 266 21 Input Output Circuit 21 2 Input Output Ports T5CL8 ...
Страница 397: ...Page 275 T5CL8 23 Package Dimensions LQFP64 P 1010 0 50D Rev 01 Unit mm ...
Страница 398: ...Page 276 23 Package Dimensions T5CL8 ...
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